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From the Grammy Nominated album The Truth About Love available now - http://smarturl.it/tal Music video by P!nk featuring Nate Ruess performing Just Give Me ...
Watch judges' comments at http://itv.com/XFactor (UK ONLY) Watch James Arthur sing Impossible by Shontelle Sweeeeet! As potential Winner's Singles go, this o...
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Music video by Rihanna performing Rehab. YouTube view counts pre-VEVO: 19591123. (C) 2007 The Island Def Jam Music Group.
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Music video by Rihanna performing Russian Roulette. (C) 2009 The Island Def Jam Music Group.
So i was pretty hesitant to make this video... but after all of your request, here is my Draw My Life video! Check out my 2nd Channel for more vlogs: http://...
Music video by P!nk performing Try (The Truth About Love - Live From Los Angeles). (C) 2012 RCA Records, a division of Sony Music Entertainment.
Download "Stay" from Unapologetic now: http://smarturl.it/UnapologeticDlx Music video by Rihanna performing Stay ft. Mikky Ekko. © 2013 The Island Def Jam Mu...
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Don't be these people. Mapoti See Bloopers and Behind-The-Scenes Here!: http://youtu.be/dfpo7uXwJnM Huge thank you and shout out to Dtrix: http://www.youtube...
Macklemore & Ryan Lewis present the official music video for Can't Hold Us feat. Ray Dalton. Can't Hold Us on iTunes: https://itunes.apple.com/us/album/cant-...
I'm just a guy from Sweden who likes to laugh and make other people laugh. Sharing gaming moments on YouTube with my bros! Why not join us? :D Become a bro t...
This video accidentally turned out kind of sad, ME SO SOWWY IT NOT POSED TO BE SAD WHO WANTS HUGS AND COOKIES? Also, FYI for anyone attempting this, it takes...
Pre-order new album Unapologetic, out worldwide Monday, November 19: http://smarturl.it/UnapologeticDlx Music video by Rihanna performing Diamonds. ©: The Is...
Music video by Rihanna performing Pon de Replay. YouTube view counts pre-VEVO: 4166822. (C) 2005 The Island Def Jam Music Group.
Ellen weighed in on the conversation surrounding the policies of Abercrombie & Fitch.
Its a simple math equation really... Click to see Bloopers and The making of this video here!: http://www.youtube.com/watch?v=nccOGxj27J8 Follow me on TWITTE...
id Tech is a series of separate game engines designed and developed by id Software. Prior to the presentation of the id Tech 5-based game Rage, the engines lacked official designation and as such were simply referred to as the Doom and Quake engines, from the name of the main game series the engines have been developed for. "id Tech" numbers 1, 2, 3, and 4 have been released as free software under the GNU General Public License.
According to Eurogamer.net, "id Software has been synonymous with PC game engines since the concept of a detached game engine was first popularised." However id Tech 4 had far fewer licensees than the Unreal Engine from Epic Games, and id plans to regain the momentum with id Tech 5.
Predecessors (id Tech 0) 
id Software had developed 3D engines for several games before creating id Tech 1. Each game's engine had progressively more advanced 3D technology.
- Hovertank 3D (1991) used solid-color drawn walls and scalable sprites.
- Catacomb 3-D (1991) added texture mapping to the walls.
- Wolfenstein 3D (1992) increased the color palette from 16-color EGA to 256-color VGA. The game engine was also licensed out to other companies.
- Shadowcaster (1993) features diminished lighting, texture mapped floors and ceilings, walls with variable heights and sloped floors.
Doom engine 
Sometimes known as "id Tech 1" (not to be confused with the Quake engine, which can also be referred to as "id Tech 1"), it is the game engine that powers the id Software games Doom and Doom II. It was created by John Carmack, with auxiliary functions written by Mike Abrash, John Romero, Dave Taylor and Paul Radek. Originally developed on NeXT computers, it was ported to MS-DOS for Doom's initial release and was later ported to several game consoles and operating systems.
Quake engine 
Less commonly, but also known as "id Tech 1", the Quake engine is the game engine that was written to power 1996's Quake, written by id Software. It featured true 3D real-time rendering and is the first id engine to use the client–server model.
The Quake engine was updated with a new executable titled QuakeWorld that contained code to enhance the networking capabilities of Quake in response to the demand for across-internet network games that arose as a result of Quake's usage of UDP for networking.
id Tech 2 
Previously known as the "Quake II engine". id Tech 2 is based on the Quake engine, and features some enhancements such as colored lighting and a new model format. Game code is now written in C and loaded from a DLL, in place of the original Quake engine's QuakeC scripting language.
id Tech 3 
Previously known as the "Quake III engine", it was derived from id Tech 2, although a large portion of code is new or re-written.
id Tech 4 
Formerly the "Doom 3 engine", originally based on id Tech 3. It has a C++ based engine framework, and a new renderer, AI framework, physics engine, gameplay trigger system, and sound framework.
id Tech 5 
This is the engine being used for id Software's new games.
The engine is not based on any previous id Tech engines, however it reuses much of the technology from the most updated id Tech 4 engine, including MegaTexture technology, parallax mapping, bloom, motion blur, soft particles, soft shadows and pixel shader effects. id is requiring companies that use the engine to publish their games through id's sister company, Bethesda Softworks.
id Tech 6 
id Tech 6 is an upcoming OpenGL-based game engine under preliminary development by id Software, which will tentatively follow id Tech 5 for id Software games following Rage and Doom 4. It will work by raycasting the geometry represented by voxels (instead of triangles) stored in an octree.
See also 
- Tom Bramwell. "id Tech 5 : Steve Nix on the growth of id's next engine]". eurogamer.net.
- "Shadowcaster at Ravensoft.com". Raven Software. Retrieved 2009-07-02.
- John Olick (2008). "Current Generation Parallelism In Games". id Software.